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    <title>html5 programming</title>
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    <h1>html5 programming</h1>
    <h2>html5 programming</h2>
    <h3>html5 programming</h3>
    <h4>html5 programming</h4>
    <h5>html5 programming</h5>
    <h6>html5 programming</h6>

    <p>html5 programming</p>
    <p>i love html5</p>

    <details>
        html5 programming
    </details>

    <details>
        <summary>   
            html5
        </summary>
        html5 programming
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